def stopMap(stop):
    # Remove these false stops, and the Oakland Airport
    if stop['stop_id'] == '19TH_N' or stop['stop_id'] == 'MCAR_S' or stop['stop_id'] == 'OAK':
        return None

    # Get rid of AirBART
    def retainRail(route):
        if route['route_type'] == "1":
            return True
        else:
            return False

    stop['routes'] = filter(retainRail, stop['routes'])

    return stop
